*The last time my Panasonic phone did that, I replaced the batteries with
new ones. Problem went away. If yours are four years old I would think
that it is time for a battery replacement. Home Depot has them and I think
Wal-Mart does also.

In the USA, there's no GAP support, which means that phones from
different manufactories not only will not talk with each other, but
also can interfere with each other. You might try your problem phone
with the other DECT phones and base turned off.

So, maybe it's that simple - that the Ni-MH batteries, which are a
few years old, are bad.

One problem though, is that I put the new Ni-MH batteries that came
with the charger in, after charging them on the charger, and the
handsets *still* said to charge for 7 hours.

So, something fishy is going on ... with the charge message on the
handsets ... but I don't know what yet.

Click to expand...

Since about zero percent of people are gonna do that, they might have
concluded that a timer inside the device would determine
that the device had charged all it could and the display was in
terms of "do this" instead of any actual measurement, and be adequate to
direct 99.9999% of users to perform the operation.

Since about zero percent of people are gonna do that, they might have
concluded that a timer inside the device would determine
that the device had charged all it could and the display was in
terms of "do this" instead of any actual measurement, and be adequate to
direct 99.9999% of users to perform the operation.

Something doesn't add up - but all five handsets acted the same
way, even with the four new batteries from the charger put into
two of the handsets.

All five phones are now in their respective holders, and, I just
checked the charge, and they went from one bar to three bars, so,
that's just weird.

It's almost as if they'll only charge from their Panasonic
holders, and not from a separate non-Panasonic charger. But,
that makes no sense - so - I really don't know what to make of
this inconsistent data other than to ignore it.

Two independent but incompatible DECT systems, on
the same frequency, are going to cause mutual interference. The
reason the problem is intermittent is that both bases have be on the
same channel in order to cause mutual interference. With 5 (US)
channels to use, you're chances are 1 in 5 of having a collision.
Unplug one base and see if the probleem goes away.

Click to expand...

Part of the DECT standard is that a device listens before it transmits. If the
channel is in use, it changes the channel. What happens when all channels are
busy I have no idea.

What you describe was the problem with the old 2.4gHz cordless phones. They
just picked a channel and transmitted on it. The later ones were spread
spectrum, so as far as WiFi was concerned, it interfered on ALL of channels.

Don't you have a voltmeter? You shouldn't be depending on the base to inform
you as to whether the batteries are actually being fully recharged.

Click to expand...

I was remiss in not mentioning that I tested the voltage with my fluke
but the problem, as always, with testing open circuit no-load voltage
is that without a load, a battery that tests good isn't necessarily good.

However, all the handsets are now reading full bars in battery voltage,
so, I'm inclined to assume that the battery-charge indicator on the
handsets isn't really a voltage indicator - but some sort of integrator.

The good news is that it hasn't happened since re-registration; but I also
haven't been on the phone a lot either. I will report back in a few days
to let you know if the problem is solved by the re-registration or not.

Ummm... was the phone designed to use NiMH or NiCd batteries? I'm too
lazy to check.

Click to expand...

Hi Jeff,
The batteries are the original, and, they're all Ni-MH batteries.
I noticed a set (white paint) was of a different amperage, so,
I reassembled all the sets with like-amperage batteries (to
prevent reverse voltage situations).

NiMH batteries can be a problem due to high self discharge and
possible overcharging. I suggest that you charge a few of the
batteries in the phones for a day and then remove the batteries.
Measure the voltage which should be about 1.2V when fully charged.
Just let them sit outside the handset for at least 12 hrs (or more).
Then measure the voltage again. 1.1V to 1.2V is fairly normal. 1.0V
is borderline.

Click to expand...

I ran that from yesterday, Jeff, and they came back at 1.2 volts.
So, I must tentatively conclude that the phone itself has a
summative charging icon, where it might be "timed" in the charger,
rather than checked at the battery.

All five handsets, with the same batteries that read nearly dead
after charging, now read full. I haven't extensively tested yet,
but, all seems well now (tentative assessment).

With 5 (US) channels to use, you're chances are 1 in 5 of having
a collision. Unplug one base and see if the probleem goes away.

Click to expand...

This might be the reason for the intermittence!

What I *should* do is buy a DECT system with 9 handsets instead
of two DECT systems for a total of 9 handsets.

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